Psoriasis is a chronic disease, and recurrent attacks are one of the main problems that plague patients. Although the causes of recurrence of psoriasis have not yet been clarified and it is impossible to simply eradicate recurrence, it is possible to reduce or mitigate recurrence by paying attention to the following points: 1.Regular treatment, avoiding irregular and indiscriminate treatment; 2.Pay attention to finding the triggers that may be related to recurrence, such as frequent colds, chronic pharyngitis and tonsillitis, etc., and carry out targeted treatment; 3.Stop bad habits, do not smoke and drink alcohol; 4.Keep as much as possible 4, as far as possible to maintain a regular life, to relieve the pressure of work and life; 5, to maintain a balanced diet, do not eat partially.